Added more content, Minor incremental improvements

Update app.py, uuid-generator.yml, and 23 more files...

website/renderers/standalone.py

@@ -0,0 +1,6 @@
+
+def get_standalone_common_headers() -> str:
+    _html = ""
+    with open("./static/resources/Standalone/nibblepoker.min.css", encoding='utf-8') as f:
+        _html += "<style>" + f.read() + "</style>"
+    return _html